我有下面的java函数，我想把它翻译成php
java函数：

private static final byte[] salt = {-44, -5, -88, 82, 116, -8, -64, -93};

private static  void doCrypto(int cipherMode, char[] key, File inputFile, File outputFile) throws CryptoException {
    try {
        //Returns a SecretKeyFactory object that converts secret keys of the specified algorithm.
        //get detail of 'PBKDF2WithHmacSHA256' (https://docs.oracle.com/javase/8/docs/technotes/guides/security/SunProviders.html)
        factory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA256");

        //key specification
        //Constructor that takes a password, salt, iteration count, and to-be-derived key length for
        // generating PBEKey of variable-key-size PBE ciphers. An empty char[] is used if null is specified for password.
        KeySpec spec = new PBEKeySpec(key, salt, 1000, 128);
        //Generates a SecretKey object from the provided key specification (key material).
        SecretKey tmp = factory.generateSecret(spec);

        //provide a encoded secretKey with algorithm
        secretKey = new SecretKeySpec(tmp.getEncoded(), "AES");

        //Returns a Cipher object that implements the specified transformation.
        cipher = Cipher.getInstance("AES") ; 
        cipher.init(cipherMode, secretKey); 
        FileInputStream inputStream = new FileInputStream(inputFile);
        byte[] inputBytes = new byte[(int) inputFile.length()];

        inputStream.read(inputBytes);
        byte[] outputBytes = cipher.doFinal(inputBytes);

        FileOutputStream outputStream = new FileOutputStream(outputFile);
        outputStream.write(outputBytes);

        inputStream.close();
        outputStream.close();

    } catch (Exception ex) {
        throw new CryptoException("Error encrypting/decrypting file", ex);
    }
}

下面是我翻译成的php函数
php函数

function doCrypto( $mode, $key, $inputFile, $oputputFile  ){
    $key = mb_convert_encoding($key, "UTF-8");
    $salt = implode(array_map("chr", [ -44, -5, -88, 82, 116, -8, -64, -93 ] ));
    $IVbytes = NULL;
    $method = "AES-128-CBC";

    $hash = openssl_pbkdf2( $key, $salt, '128', '1000', 'sha256' );

    $data = file_get_contents( $inputFile );

    if( 'enc' == $mode ){
        $result = openssl_encrypt($data, $method, $hash, 1, $IVbytes);
    } else {
        $result = openssl_decrypt($data, $method, $hash, 1, $IVbytes);
    }

    if( !$result ){
        throw new Exception( "Error encrypting/decrypting file : " . openssl_error_string() );
    }
    file_put_contents( $oputputFile, $result );
    return true;
}

测试用例适用于php到php
但是当我收到来自java的加密文件时&试着用php解密
我一直有以下错误error:0607a082：数字信封routines:evp_cipher_ctx_set_key_length：密钥长度无效
我还尝试了用二进制模式的fopen读取文件

$handle = fopen($inputFile, "rb");
$contents = fread($handle, filesize($inputFile));

有人能指出我在这里遗漏了什么吗。